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Museum of the Game® & International Arcade Museum® Forums
Recently my Frankenstein motor stopped functioning despite the up/down switches registering & the motor receiving 12v.
I believe my next step is to replace the main drive transistor at Q55 however I'm having difficulty identifying the piece. It looks like this IC has the main & pre-drive transistors built into one package.
I've attached the schematic & a picture of the board with the circuit in question.
I've got an extra Ice Cold Beer motor I could try first & I've yet to try hooking up a 9v to the motor itself to rule out that it's still functioning, but wanted to gather this information in case it was useful for myself (or someone else since there seems to be a stark lack of information on the parts used on these boards).
I believe it's possibly one of these parts:
#LM555
#124-5005-00 (LM6132AIN)
#CA3085E
Any help is appreciated. I wish I could just use my 540s lol.